Pascal 1.5 program challenge

[GiantMidget]

hi was just wondering if anybody had any suggestions to any programs i could try to make with this software, i have an okay knowledge of the language and have made some complex programs in the past, (Considering the complexity limit that Pascal forces on you) like a Binary Converter and Calculater, Guessing games and a Blackjack game.
But now im stuck as to what to move onto as i am doing my Computing A Level and so i want to be ready for the practical.
thanks.

 

[Jamie]

Write a binary tree data structure with search, input and delete functions.